Four Mile Run

Margaret J. Krauss / 90.5 WESA

Hundreds of millions of gallons of stormwater flow into Pittsburgh’s sewer system during hard rains, which results in chronic flooding and sewage backups. A massive green infrastructure project slated for Four Mile Run could significantly reduce those problems, Pittsburgh Water and Sewer Authority officials said.

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Pittsburgh Water and Sewer Authority officials expect to begin modifying Schenley Park by 2019 to address flooding in Four Mile Run, a section of Greenfield. 

Margaret J. Krauss / 90.5 WESA

A shuttle service between Oakland, Four Mile Run, Greenfield and Hazelwood could be built by the City of Pittsburgh by 2020. The Mon-Oakland Mobility Plan was called a “proof of concept” for how transportation could work in Pittsburgh.

Josh Raulerson / 90.5 WESA

Stretching roughly from the edge of Panther Hollow to the base of Greenfield Avenue, the neighborhood of Four Mile Run is low-lying and has endured repeated flooding over the last several years.

Margaret J. Krauss / 90.5 WESA

City officials want to push the restart button on an old idea: establishing connectivity between Oakland and neighborhoods to the south. 

David J. Phillip / AP

Experts say flat topography, impermeable clay-based soil and building on a low lying coastal plain all contributed to the significant flooding issues in Houston over the past month.

Samuel Brody, professor of Marine Studies at Texas A&M-Galveston, said the city’s rapid expansion and development had a role in making it difficult for water to subside.

“On top of that, [our population is] 6-plus million people and with that, all the roads, rooftops, parking lots, which is pavement, concrete and no water can absorb into the soil,” Brody said.